Practice Doppler Effect - C.3.3 | Theme C: Wave Behaviour | IB Grade 12 Diploma Programme Physics
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C.3.3 - Doppler Effect

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to the frequency of a sound wave if the source moves towards you?

💡 Hint: Think about how the pitch of a siren changes.

Question 2

Easy

What term describes the change in wavelength for an object moving away from an observer?

💡 Hint: Recall the colors of light on the spectrum.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

The Doppler Effect occurs when:

  • The source is stationary
  • An observer is stationary
  • There is relative motion between the source and observer

💡 Hint: Think about what needs to move.

Question 2

True or False: The frequency of sound increases when the source is moving away from the observer.

  • True
  • False

💡 Hint: Recall how pitch changes when an ambulance passes by.

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Challenge Problems

Push your limits with challenges.

Question 1

A spaceship travels away from Earth at a speed of 0.1c (where c is the speed of light). If it emits light at a frequency of 600 THz, calculate the observed frequency on Earth. (Use the Doppler formula for light).

💡 Hint: Think about the principles of redshift.

Question 2

In a medical ultrasound application, a transducer sends sound waves towards a moving blood vessel at 20 m/s. If the source frequency is 2 MHz, calculate the frequency received by the transducer when the blood vessel is moving towards it at 1 m/s.

💡 Hint: Break down the formula with the right values.

Challenge and get performance evaluation